E10
ICD-10Non-billable categoryType 1 diabetes mellitus
Official ICD-10-CM descriptor (FY2026)
Type 1 diabetes mellitus
E10 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- brittle diabetes (mellitus)
- diabetes (mellitus) due to autoimmune process
- diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction
- idiopathic diabetes (mellitus)
- juvenile onset diabetes (mellitus)
- ketosis-prone diabetes (mellitus)
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- diabetes mellitus due to underlying condition (E08.-)
- drug or chemical induced diabetes mellitus (E09.-)
- gestational diabetes (O24.4-)
- hyperglycemia NOS (R73.9)
- neonatal diabetes mellitus (P70.2)
- postpancreatectomy diabetes mellitus (E13.-)
- postprocedural diabetes mellitus (E13.-)
- secondary diabetes mellitus NEC (E13.-)
- type 2 diabetes mellitus (E11.-)
More specific codes under E10
- E10.1Type 1 diabetes mellitus with ketoacidosiscategory
- E10.2Type 1 diabetes mellitus with kidney complicationscategory
- E10.3Type 1 diabetes mellitus with ophthalmic complicationscategory
- E10.4Type 1 diabetes mellitus with neurological complicationscategory
- E10.5Type 1 diabetes mellitus with circulatory complicationscategory
- E10.6Type 1 diabetes mellitus with other specified complicationscategory
- E10.8Type 1 diabetes mellitus with unspecified complications
- E10.9Type 1 diabetes mellitus without complications
- E10.AType 1 diabetes mellitus, presymptomaticcategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.